Mouse double click test
A worn mouse switch fires twice from one press. It drags files you meant to select, opens things you meant to click once, and it is intermittent enough that people spend weeks blaming the software. This measures the gap between clicks in milliseconds, which settles it.
Click the pad below about twenty times. Single, deliberate clicks — do not try to click fast.
- Clicks registered0
- Unwanted double clicks0
- Shortest gap—
Did the test count more clicks than you made?
How to run it
Click the pad about twenty times at a normal, deliberate pace. Do not try to click quickly — the test is looking for clicks you did not make, and clicking fast defeats it.
Count your own clicks roughly as you go. If the registered number ends up higher than what you did, the difference is the fault.
Reading the numbers
Clicks registered is what the browser received.
Unwanted double clicks counts pairs closer together than seventy milliseconds.
Shortest gap is the tightest pair in the run. On a healthy mouse this is whatever your fastest deliberate pair was — usually well over a hundred milliseconds. On a failing one it will be in single or low double digits.
| Shortest gap | What it means |
|---|---|
| Over 100 ms | Normal — that was you |
| 70–100 ms | Fast clicking, or a switch starting to go |
| 20–70 ms | Bounce; the switch is failing |
| Under 20 ms | Definitely bounce, and well advanced |
Your three options
Raise the debounce time in the mouse software. Free, immediate, and it works by making the mouse ignore a longer window after each click. Logitech, Razer, SteelSeries and most others expose this. The cost is a few milliseconds of added click latency, which matters to almost nobody. Try this first.
Replace the switch. The proper repair. The switches are a common part, cost very little, and there are two or three solder joints per switch. Worth it on an expensive mouse, not worth it on a cheap one.
Replace the mouse. The honest answer for most people, and the reason this fault is worth diagnosing rather than guessing at: knowing it is the switch means you are replacing hardware that is genuinely worn out rather than a mouse that was fine.
Windows 11
The double-click speed slider is in Settings, Bluetooth and devices, Mouse, Additional mouse settings. It is worth checking, but remember what it can and cannot do: it changes how two clicks are interpreted, not how many arrive. A mouse sending phantom clicks will keep sending them at any setting.
macOS
Double-click speed lives in System Settings, Accessibility, Pointer Control. The same limitation applies. macOS has no debounce setting of its own, so if your mouse has no configuration software, the switch replacement is the only real fix.
Common questions
How does the test know the difference between chatter and me clicking fast?
Timing. The fastest a person can deliberately double click is around a hundred milliseconds, and most people are slower. A worn switch bounces in five to twenty. The test flags gaps under seventy milliseconds, which sits comfortably between the two — so if you are clicking normally and the number climbs, no finger produced it.
What actually causes it?
The metal contacts inside the switch wear and lose tension, so instead of closing once they bounce, making and breaking contact several times in a few milliseconds. The mouse firmware is supposed to ignore that window; as the switch degrades, the bounces get long enough to escape it. It is a wear item, which is why it appears after a year or two of heavy use and never gets better.
Can I fix it without replacing the mouse?
Sometimes, in two ways. Some mice let you raise the debounce time in their configuration software, which masks the fault at the cost of a little latency — that is the free option and it is worth trying first. The real repair is replacing the switch, which is a soldering job costing very little in parts if you are comfortable with it.
It only happens sometimes. Is it still the switch?
Almost certainly. Contact bounce is intermittent by nature and gets more frequent as the switch wears. Run twenty deliberate clicks; if even one or two come back under seventy milliseconds, that is the fault appearing at its current rate, and the rate rises over time.
Could it be a software setting instead?
The double-click speed setting changes how far apart two clicks can be and still count as a double click — it cannot invent a second click that the mouse never sent. If the count here exceeds the clicks you made, the extra ones came from the hardware.